app.py

from flask import Flask, render_template, redirect, url_for, request, flash
from flask_sqlalchemy import SQLAlchemy
from flask_login import UserMixin, login_user, LoginManager, login_required, logout_user, current_user

app = Flask(__name__)
app.config['SECRET_KEY'] = 'your_secret_key'
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///database.db'

db = SQLAlchemy(app)
login_manager = LoginManager(app)
login_manager.login_view = "login"

# --- Database Models ---
class User(db.Model, UserMixin):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(150), nullable=False, unique=True)
    password = db.Column(db.String(150), nullable=False)

@login_manager.user_loader
def load_user(user_id):
    return User.query.get(int(user_id))

# --- Routes ---
@app.route('/')
def home():
    return render_template('index.html')

@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        # login logic here
        pass
    return render_template('login.html')

@app.route('/register', methods=['GET', 'POST'])
def register():
    if request.method == 'POST':
        # register logic here
        pass
    return render_template('register.html')

@app.route('/logout')
@login_required
def logout():
    logout_user()
    return redirect(url_for('home'))

if __name__ == '__main__':
    with app.app_context():
        db.create_all()
    app.run(debug=True)